Abstract
In this article, 25 years of data are utilized from nonprofit schools operating in the United States’ oldest and largest private school voucher program to test theories of isomorphism. We find that startup and religious schools belonging to an umbrella organization such as an archdiocese are particularly likely to serve similar student bodies at similar costs. In addition, we find that isomorphic pressures increase the longer a school participates in the Milwaukee voucher program, and that increased program regulation is related to increased sector isomorphism. The results illustrate the difficulty of using New Public Management style reforms, at scale, to encourage a diversity of nongovernment providers to provide a service traditionally provided by the public sector. The results will be of interest to scholars studying nonprofit institutional theories, school choice, and New Public Management style reforms.
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